If I charged 30$ a hair cut the whole year how many customers would I need?and how many times would each customer have to come in in order for me to get 17,510$ with in that year step by step please I need this solved

An automated water dispenser fills packets with one liter of water on average, with a standard deviation of 5 milliliter. the manual says that after a year of operation the dispenser should be tested to see if it needs recalibration. a year later a number of filled packets are set aside and measured separately. it is found that the average packet now contains about 0.995 liters. does the dispenser need calibration? explain your answer.

Asequence is a function whose is the set of natural numbers

Sections of prefabricated wood are each 5 1/3 feet long. how long are 7 1/2 sections placed end to end?